Q-switched or MOPA, and the maker
Q-switched sources mark and engrave metal well. MOPA sources vary pulse width, giving black on anodised aluminium and colour on stainless. Ask the source model and a photo of its serial label.
No DramaBuyer guide · Printing & signage
Fiber marking offers look alike at the same wattage; what a parts maker pays for later is the source inside, Q-switched or MOPA and whose, because that decides dark or colour marks on anodised aluminium and stainless.

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Q-switched sources mark and engrave metal well. MOPA sources vary pulse width, giving black on anodised aluminium and colour on stainless. Ask the source model and a photo of its serial label.
A bigger field lens covers more area with a larger spot, so small codes lose sharpness. Ask which lens is fitted.
Online units mark a moving line and need a trigger signal and an encoder. Handheld heads reach large parts.
Ask whether the software steps serial numbers, reads a file or database, and takes a start signal from your PLC.
02
Send these with the enquiry. Without them, any number a factory gives you is a guess dressed as a quotation.
03
| Require this | A pass looks like |
|---|---|
| Mark ten of your parts with serial, date and 2D code. | Every code reads first time and serials step correctly. |
| If MOPA was sold, mark black on anodised aluminium and colour on stainless. | Same result on a second part, photographed under the same light. |
| Time the mark on one part at the quoted settings. | Seconds per part written into the FAT report. |
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A UV laser marking machine, which marks them without scorching.
A CO2 laser engraving machine.
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We name the kind of source, how many and when, and never the factory. Listed prices are asking prices, not landed cost. Where we do not hold a fact we say so: that is a GAP, not an estimate.
07
Every machine we source in this area is on the Printing & signage page. How a project runs, stage by stage, is on how it works, and what it costs is on pricing.
Straight answers
Mostly source brand, traceability software support and local service.
Source label against invoice, lens fitted, your parts marked and read, serial stepping, guarding, class label.
A Declaration of Conformity, the technical file, the class label and a manual in your language.
You, when you buy direct.
Contact
Send a machine, a quotation you want checked, or a question. We reply with what we would look at first.
Sent
A person reads every message. You will hear back within one working day.
Not sent
Please email info@nodramachina.com directly and we will pick it up from there.